212103601 has 4 divisors (see below), whose sum is σ = 212414832. Its totient is φ = 211792372.

The previous prime is 212103569. The next prime is 212103607. The reversal of 212103601 is 106301212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212103601 - 2⁵ = 212103569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212103607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154591 + ... + 155956.

It is an arithmetic number, because the mean of its divisors is an integer number (53103708).

Almost surely, 2^212103601 is an apocalyptic number.

It is an amenable number.

212103601 is a deficient number, since it is larger than the sum of its proper divisors (311231).

212103601 is an equidigital number, since it uses as much as digits as its factorization.

212103601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311230.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 212103601 is about 14563.7770169692. Note that the first 3 decimals coincide. The cubic root of 212103601 is about 596.3703096727.

Adding to 212103601 its reverse (106301212), we get a palindrome (318404813).

The spelling of 212103601 in words is "two hundred twelve million, one hundred three thousand, six hundred one".